Cutter-head.



Af. LANDIS. f` CUTTER HEAD. APLIcATloN FILED un. 1, 1901. 948,891.Patented Feb s 1910 2 snnnT-snnm 1 f INVENTOR.

WTNESSES: c@ M A v ORA/EY A. B. LNDIS.

GUTTER HEAD. n APPLICATION PIL-BD APR-1. 1907.

Patented Feb.l8, 1910.

2 SHEETS-SEBET 2.

JN VEN T 0R. Ms?. M, BY

ATTORNEY.

IgZZahomU/it may concern."

*XUNITED STATES.'v PATENT onirica.

ABRAHAM B. LAivms,4 .oF- WAYNEsBoRo, PEivivsvmmimi4 eUMERfHEeD i.,.-948, 891; spc'meafionpftetfersPatent. y Patented Fish-354910 n'Alipiiation sied eapril i, 19o-'7. seriaiivmsearw. t

foration -in the body A isada'pted to engage ABRAHAM B..I 1A i\IDIS, atherewith. A screw-threaded pliiga ,in the of the 'UnitedSta.tes,`res1d1ng at' outer` end of said perforatiuserves as a oro, inthe' county of Franklin and means to force said'detent into said groove.Pennsylvaniafhave invented certain v itsl tapered face b earingupon thetapered. wfaiid `useful Improvements in Cutterface of said groove, andithus serving to s, of which the followingisa speciica' draw thecutter-holders B' back tightly i against the face'of the part A. Each ofsaid cutter-holders B is formed with a transverse Wing B2 projecting toone side thereof and adapted to rest a'gainstytlie face of the art Agroove b2 with tapered edges Fsee especially Fig. 3) thereinengage. Saidslot. 62 is' formed yof sufiicient length topermit the swinging of thecutterholder on its trunnion required bythe Work.

Said `cam vof a pin B4 the `main body of Ywhich isec centricallymountedin a. v'cylinder B5, which is mounted in a suitable' seat or bearing asin the body A." The rear end of said pin B4 is formed with a head b3Ybetween which and the main body ofsaid pinis a Yneckz* Said head b3 ofeach of said pins B* engages with a slot Zr? in the face of a slid-ingcollar B (see Figs. 8 and' 9) which isniounted upon the main portion ofthe partB. Said tieniv r e s aid invention consists in various ini- 10`provements-"in the details ofy construction `'and arrangement 'of parts,of cutter-heads for cutting threads wh.

which Figure l is a my Vimproved cutter-heads, A elevation. thereoiiFig. 3 aj vFig 4 2 a. front detail l.longitudil lialsection on thedott-edline` {3"3 in Fig, 2,

2 5 Fig. a similar View on the dotted' line H in 2, Fig. .5 a view.similar to a portionof Fig.- 2, showingflefbhand cutter -holders,substituted fort-lie right-ha`nd cutter-hol ders inf-the. principalviews, and Figs. 6to collar B is formed witlra circumferential 30vA1,3inclusive, detailed Views illustrating difgroove, as shownl` withivhicha shifting-forli f ferent parts'of the device separately, as will-(not shown) may engage for sliding it back benliereinafter pointed out.and forth. Each cylinder B5 is formed with Said drawings the v'portionsmarked A gear teeth on its exterior at its rea-r end with represent Vthemain casting'constituting which internal gear teeth on a r1ng 2` are35,lllod orfram'eof the cutter-head, B the vcutadapted to engage. Saidcylinders `are lier-ho ders, rand-C the cutters.v f I thus geared.together byfineans o said in- #f-.The body A is a castingofsui-tableform -ternal tooth-ring' A2, vwhich 1s mounted `on toisup ortthe otherparts, provided withk a the body A on a seat formed therefor adcentraperforation a6 to clear the work as it jacent to the flange a2. at vthe-f ront end of 40 passes through; the: cutter-die' and has aV said body.Betyveentwo of said cylinders A -flange on its rear end by ,which it ma.be B5 is'mounted a cylinder P in a suitable flbQ1tedto thefaceplatebfthe spindle o the bearing' in the part A having' teeth on its.'macliinen theusual manner.; vIt is formed, inner end which are alsoadapted toz engage ffscrewfthreaded on 'its outside adjacent lto withthe internal teeth of said ring A2, (see 4 5; saidiange Afandlias ascrew-threaded collFigs.. l2 'and 13).' The outer end otsaid .lara"mounted.thereon, for a'purposeto'be cylinder A3 1s provided With aslot a" to represently described. c'ei've a screwdriver, `or othertool,for` turn;

' The cutter-holders B are each of 'suitable illg'said cylinder andadyusting said rino- A- ?form on their faces-to receive-the cutters C:11150 .:ahd iny piece land through saidringthe cylinders B 5. Adyaremounted- Ion, or'v` formed `jacent to one side Yoi-said cylinders@ vis l--,withatrunnionffB4 w'iich isniounte'd in' a formed a radialperforation extending guitablefseat or bearing al. infthebody A.throughI the" dan e ainto the p art -in Each'ofsaid't-runnions isformed--ivtha s'e`g" which is mountev ,a sleevea4 havinga tamentalgroveb in its outside -near its frontl "5'5! end thdrearside of which istapered and. a slidingggdetent-b mountedin'jajradial ,peri

' US" if."

, pered 'or ivetige-shapedv side adapted inipinge against thefsideofAsaid cylinder. 4A

is formed Vwith which a cani B3 is adapted to:

Ba'isv formed on the forward end 'screw "A4-v extends v through. saidlsleevev into la screw-threaded port-ion in the bottom ofsaid; `radialperforation and is thus adapted to force said sleeve down upon the sideof said cylinder and The rear end of each ofthe trunnions B" is formedwith-atransyerse groove adapted' tov engage with a -traiisverse tongue67 on part B7 to rotate .Witl1. sa. id trnnnion. Each` mounted in therear end of the bearing 'for said trunnion in part A and formshalfa.casing for the coiled-spring B3. The otherv part of said casing BD issecured-4 rigidly inl 'the rear end 'of said bearing by means .of lascrew 7)? andthe part Bis connected. there.-y With and secured thereto'by a central screw4 718.Which also serves as a pivottd. permit the ofsaid parts B7 and B have inwardly. exL tending wings b `and b1?respectively,

against the'oppo'sitesides of'which theop` i posite endsv of spring B8are 'adapted tobear.

As said trunnion Bf turns in'operation it v4turns the part B7. of said`casingand also Wing thawing b9 which serves to compresssaidA betweentheadvancing side of said?- bm .of the B9, so that 'when the .operatingVparts spring b9 and the Statmnary Wing part are released saidspringexpands and't-hus the right-hand construction.

l.this character.

v`- normally operates .to. return the cutter-1.

holders -to open position.

tion and operation Vis identical with the corresponding parts as abovedescribed for ,."The cutters Gare inoyed holdersB in the, saine manneras shown in some of my former a-pplicationafas for nr,

stance application' No. 35 3,85Q, 'fled `J an. 24,. ".1907, or may be secur e d -inany approved The Aoperation is as follows:- The 'size .ofi

the die-coin 'eSedo-fthe cutters C in t-he holders. B 1s adjusted by]rel easing the toothed cylinderV A3.''roln'yfthel clamping sleeve a?,lwhich done by backing the screw A?, when ,by ni'eans ofthe screwdriversa-id. 1- cylinderASis turned t'o turn the, ring A? `and' throughit fthecjdinc'lersfBQAs said cyl# 'in'ders B5 turn they/operate to more thepins yLB'lnLVing-the cams B3 on their outer ends'.

in or outin. relation'to the axis of the head,

` accordingtolthe'direetion -otthe rotation,

by reason" 'bi said pins beingiocated. l in said 'cyhnde'rsl 'to `'o'neside 'of tv elr. centers. haveprovlded a. series of vgraduation marks onthecsurface' of` said ring, A2, as shown in Fig. 1,'whichare adapted toregister .withI an indicator. point .0 on the flange a? adjalock itfirmly against rotation.;

r is .desiredto op .-fornfardtot -when Athe tapered rear side v,of .saidAcam con `adj usted so that"trtfhen'the cutter-' dieis' closed.-thespringis compressed and assoonfa's the movement.

`in the cutter ."desirable. "Haying thus v.cutters mounted on said;cutterh`o1ders,`j means tor adJusting said cutter-holdersfandl .cent to'it and by' which the-rossmais enabled .to set the `die for `any size ofwork desired;y Vihen the size desired has been .secured the screw A4isa' ain tightened to clamp the-cylinder A3. an( locl 1t securelyagainst further'niovenent. This serves to set andjhold the'dieforthesizeof Workidesired. The dieisthen openedy and closed toymea-ns" oftheslidingcollar B9 andthe con? nection between said collar said pins B*having the cams B3 ivlnch'egage the grooves b2 Withtapered sides .inthey inner faces ot- B6 Fig. Buntil' it abuts' the collar a 'BZ' willbe. thrown' inwardlyL and Y the die closed as' shown in Fig'.I l. '\Vhen it en the' die the: cllar BP is slid e vposit-ioni'shown in Fig. 3

tactingwith the tapered outside Wallet the Wardly nd swingthe'cntterholder's to open` the `die. -The spring Bf-Willjalso serve.t-o

throw.l said cutter-'holders.open, each being. 9o

parts, are moved to open saiddiesaid spr-ings" 'Will operate.to.throw'theniropen 'andj-jpre-4 ventany flostfmotion loef- Ween the'parts. It

f Will be seen that bjf reasonjfif the.elongated o utformv of the slots,122. the sliding `of the camsv lBfvwill operate .to 'swingsa'id lcutter-holders `assaidslotswill slide over the 'holdei'sturn inmaking-this ([00 Th-.collare.isjadjust'ed on the p'art A .inposi'tionto: serve as an abutment said. pins `as .for thesli'ding collar B6' sothat 'tl1e 'parts will be limited-in their closing 1noven'ie11t`-fto jthe sizeof'. die -asrfixed by ythe'adjustment of 105 thering A2,oranyslght variation of said adgustinent that may befound ne'cessaryo''fully described my said"""i'1r Ventlon, what' Iclalin as new anddesire' to 110 `secure b v Letters Patent is:`4

Y- 1. In a cutter-head, the combination,'f-.

`the body, thecutter-hol'ders movablyin om'rtl ed ongsaidlbodyaroundthe-axis thereof the opening .and closing the die comprisingacanriorv each. .cutter-holder moullted in' an eccentric bearing 1n said'bodyuid having a tapered end engaging .n-"ithaft-apered edgelo 'onsaid. cutter-holder, said'eccentricj bear-V ings, meanstor..slidingfsaid cams longitu! tric bearings, substantiallysetiz'ortlr.i

Ina y,cntter-head,.the combination, the body, the cutter-holders movablymounted around the axis of said body, ar cam mounted in an eccentricbearing and formed with a tapered 'outer end v'engaging with a taperededge of 'each cutter-holder, means 1 3@ face of said body, means foradjusting said ablymounted o n the tace of said body aaround -gear.connecting said several eccentric bearf limiting the moyenient of saidsliding ring,

for sliding s aidcams lon'g'itud-in eccentric bearings, means torrotating v the the-'infin'adjustedpositionl, substantially set *ing saidcams, means for rotatin 15 .with internal teeth engaging With the teethlsaid .eccentric bearings, and means j for securing forth. v 3. acutter-head, the combination,- of the-body, the cutter-holders mountedon the cutter-holders and opening and closing the die comprising-eccentrically mounted sliding cams engaging with said cutter-holders,eccentricbearings mounted. to rotate and carrying said. sliding cams,means for slid- 0 the Abearings containing them, and means or lockingsaid bearings in adjusted positiom'substan- .tially set forth.

el. In a cutter-head, the combination, of the body, the cutter-holdersadjustably mounted on said body around its axis, fand means .foradjusting said cutter-holders comprising a sliding cam engaging Witheachof said cutter-holders, each, of said cams being. mounted in aneccentric bearing, said eccentric bea-rings provided with teeth, and avring surrounding the body and formed of saidseveral bearings,- nieansfor turning said-ring, and means forslidi-ng said cams, vsubstantiallyset forth. f

5. In a cutter-head, lthe combination', 'of the body., a seriesofeutter-liolders adjustits axis, a series of cams mounted to slide f ineccentric .bearings adjacentto saidv cutterholders and formed to engagetherewitlna ings, means vfor opeiatingsaid gear, and a sliding ringconnected with said several sliding cams, substantially setforth.

' 6. In a cutter-head, the conibii'iatioiiof the4 body', 4thecutter-holders adjustably mounted on theface of said-body around itsaxis, sliding cams mounted eccentricallyw in a. rotary bearing, -meansconnecting said' bearings forrotatingthe'm, a sliding collar connected-to said cams for operating them longitudinally, and an adjustablecollar for substantially set forth.. Y l

7.1'A cutter-head comprising .a body,.cut--. ter-holders mounted on`trunnions journaled. in beaiings"- in"said body, cams vengaging' slotswith tapered edges to one side et the axis of said cutter-holders forswinging theaiionv their truiinions, each lof said cams being mountedeccentrically in a.. cylinder j ournaled in said body, said cylinders,means for turning them to change the posi-tion of the cams,- and meansfor sliding saidcams -tlie4 body, the cutter-'holders movable"independent of .the movement of said. cylinders. substantially as set.torth. 8. A cutter-head comprising a body. cut- 'havingcam-engagingttaees,v a 'ea-iii" mounted. eccentrically in a cylinderjournaled in said body with its cani-face engaging with the cam-faces ofsaid' Wing, said cylinders each being formed witligear teeth, aninternallyl toothed ring'surround'ing said body and engaging with theteeth of said 4'several cylii? ders, means for operating said ring, landmeans for operating said several cams independent-of the movement ofthecylinders, substantially as set forth.

9. .In a cutter-head, the combina,

i011, of

bearings 'around the axis of said bodygfcanis mounted Aeccen'trically intoothed cylinders at intervals around said body, each cani engaging withonev of said cutter-holders, a toothed ring mounted on said bodyengaging with veach of said toothed cylinders, means for' turning saidtoothed ring Whereby said cylinders may be moved simultaneously, meansfor locking said toothed ring whereby said several cylinders are lockedin position, and means for moving said cams longitudinally independentof the movement of said cylinders, substantially as set forth.

4l0'.A I n avcutter-head, the combination. ot

the body, the movable 'cutter-holders, the

movable cams for operating said cutterholders, each of said cainsbeingeccentrically, mounted in a toothed cylinder, said toothed" cylindersjournaled etween Vsaid cutterholders, a'toothed'fring mounted on saidbod yengaging'with each of said cylinders,

-sai toothed ring being formed with a graduated Scale or indicator onits Sui-face, and means for' operatingfsaidl toothed ring to adjustthe-die" for different sizes of Work,

substantiallyas set- Vfjorthl v -f l1. In a cutter-die,1the combination,of the body, the' cutter-holders mounted on piyots around the axis ofsaid body and formed with side-wings, cams yfor operating saidcutter-holders mounted eccentrically in toothed cylinders and adapted-to slide longitudinallyfin said, cylinders with their caniends-engaging slots in said wings, said cylinders,:means for rotatingthem, means for 'ldcltingt1ieni iii fixed position, and means forsliding said y ea'i'iis in said cylinders independent of ``the rotaryincrement thereof, substantiallgti as set Jforth.'

In Witness whereof. I have hereunto 'set my liandiand seal atlvashington D. 1-this 20th day of March. D; nineteen hundred andv seten.

' XBRAHAIBI B. LANDIS. [1.. 5.-]

Witnesses :V i

:V E. H. Paniiins,

E IV. BRADFORD.

